Electrification of Nanjing Metro Line S6 begins, China September 23, 2020 | Asia Pacific Company News The China Railway Electrification Bureau has started the electrification works of Line S6 of Nanjing Metro. The power supply system deploys a 110-35 kV two-level power supply mode and a DC 1500 volt p... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password